Metal-working machine



Feb, 3. 1925.

R. S. BROWN METAL WORKING MACHINE Filed Deo. lO, 1923 3 Sheets-Sheet 1 gmmmwwm L 2 mman m :I Mllllxf h,

Feb, 3. 1925.

R. S. BROWN METAL WORKING MACHINE Filed Dec. l0, 1923 5 Sheets-Sheet 2 Feb, 3. 1925. 1,524,778

R. S. BROWN METAL WORKING MACHINE Filed Dec. 10, 1923 3 SheetsSheet 5 www Patented Feb. 3, 1925.

UNITED STATES PATENT oi-Fici-z. l

ROBERT S. BROWN, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR T0 NEW. BRITAIN MACHINE COMPANY, 0F NEW BRITAIN, CONNECTICUT, A CORPORATION OF CON- NECTICUT.

.METAL-WORKING MACHINE. l

Application led December 10, 1923. Serial No. 679,568.

To all 'whom it may concern:

Be it known that I, ROBERT S. BRowN,

citizen of the United States of Amerie-a, residing -at 29 Russell Street, New Britain, in the county of Hartford and State of Connecticut, have invented certain new and uscful improvements in Metal-Working Ma.- chines, of which the following is a specification. This invention relates to metal working machines. While it is possible that theimprovements ma be incorporated in various kinds of appliances of the character set forth, they have nevertheless demonstrated many advantages when embodied in a socalled, sextuple machine which is usually tooled for producing nut blanks. `While I have several motives in view, among the principal Ones are the provisionof 'a machine of the character set fort-h which is comparatively simple in construction, effective in action and by which the work when brought against a stop will not be marred. While the invention is capable of wide modification within the limits expressed by my claims, I have, nevertheless, in the drawings accompanying and forming part of the` present specification, shown an advantageous form of embodiment o-f the invention which, to enable those skilled in the art rto prac tice the same, will be set forth fully in the following description. I am not in any particular limited to this disclosure. may depart therefrom in a. number of particulars within the scope 0f the invention defined by the claims following said description.

Referring to said drawing:

Fig. l is a practically longitudinal ceutral section of a machine involving the iiivention.

Figs. 2 and 3 lare detail views in top -plan View of a tool holder and slide, showing the same in two positions.A

Fig. 4 isv an elevation as seen from the lower side of Fig. 2.

Fi 5 is a cross section on the line 5-5 of Fig. 3 looking toward rthe left.

Fig. 6 is a similar view, the section, however, being on the line 6-6 of Fig. 2.

Fig. 7 is a sectional detail of a spindle.

Fig. 8 is a sectional detail view of the abutting portion of the spindle.

Fig. 9 is a top plan View of a structure quite similar to Fig. 2 and showing also the tools carried by the cross slides.

Fig. 10 is a cross section on the line 10-10 of Fig. 9 looking in the direction of the arrows.

Like characters refer to like parts throughout the several views which are o-n different scales.

The various parts in a machine of the present type are sustained by a suitable frame, such as thait denoted in a general way by 2, as shown best in Fig. 1. This frame carries for rotation a suitably driven shaft, such as 3, which constitutes the main or cam shaft and from which various parts of the appliance receive their necessary niotion and which in turn is driven in the ordinary fashion. Above the shaft 3 land rotatively supported by proper bearings is a spindle, such as 4. This spindle 4 rotates the work spindles and chucks 9 supported for rotation in the carrier or head 5. The carrier 5 and chucks 9 constitute a means for receiving the Work to be acted on while a carrier as 6 supported for sliding movenient by the frame 2 receives the tools which in the present case are in the form of drills.

The shaft 4 has at an end (the right in Fig. l) the spur gear 17 in mesh with the pinion 18 on'the stub shaft 19 which liias a driver 20.

Through the work carrying spindles 8, the work is advanced toward the right in Fig. 1 and into the ends o-f the work, are concurrent-ly introduced the six drills 7 so that as the spindles 8 are rotated, the drills entering the right end of the work and drill or bore the same interiorly During the drilling motion. the slide 10 is being` ad vaneed or moved toward the left in Fig. 1. It is assumed to be at the point of starting in this direction in the figure mentioned. At the conclusion of the advance movement of the slide l0, the latter is drawn backward or to-wai'd the right by the action 0f the cani drum l2 in the manner already observed. The drills are drawn from the work after which the extreme ends of the work are cut off to present interiorly drilled tubes. One` of the important features of the invention is t0 prevent the marring of the work when the stops are being moved away from the path of the drills.. The means by which this is possible will be hereinafter set forth.

As before stated, the `action of the machine is as follows: Initially six bars or rods are advanced through the work spindles 8 andare held in the spindles by the chucks or work holders 9 with a length of each to be extending beyond the spindles 8. During the advance of the work, the tool carrier 6 is being retracted toward the right in Fig. l.

Rigidly attached to the slide 10 is the block 21 having in it'the cam slot 22 which receives within it the anti-friction roller 23 mounted on the under side of the cross bar 22 Which is located for reciprocation in bearings 25 mounted on the frame 2. In engagement with each side of the cross bar 24 are anti-friction rollers 26 mounted on the segmental gear 27, the teeth of which intermesh with those of the tooth rack on the underside of and rigid with the cro-ss bar 24. The segmental gear 27 is rigidly attached to the tube 28 which is supported for reciprocation on the spindle or shaft 4 in the bearing 29 on the too-l carrier 6.

Rigidly mounted on the front of the tube 28 is the. spider 30 having as shown six fingers or arms 31 which are spaced apart at intervals agreeing to that between the six chucks 9.l Near the outer ends of the arms 31 and inthe same radial relation to the chucks 9 are threaded the studs 32 held in locked relation with the arms 31 by lock nuts 33. The outer ends of the studs 32 are enlarged to enclose and support anti-friction buttons as 34 having shanks held against inward thrust by balls as 35 and locked against outward movement by the pin 36 mounted in the stud 32 and iitting the groove 37. It will be noted that the ends of the cross bar where they act in the bearings 28 are at a slight angle with the rest of the cross bar and that by reciprocating same' in one direction it will move the cross bar to the left (see Fig. .2) and in the other direction it will move the cross bar to the right (see Fig. 3) and this movement of the cross bar will cause the sliding tube 28, the spider 30 and the buttons 34 to move likewise. The reciprocation of the cross bar also causes the partial rotation of the spider by the action of the rack and segmental gear. Therefore, the slight retraction of thebuttons 34 and the partial rotation of same simultaneously causes them to move from the right projecting ends of the st-ock without marking the same.

Referring to Figs. 9 and 10 the cutters are denoted by 38 and the ends of the stock which they cut of by 39.

The machine herein before described is what is known as a sextuple machine and it is organized for producing nut blanks from suitable section rods, the material worked upon being fed out of the six spindles and against a multiple stop, gripped by the spring chucks at which time the multiple stop is partially rotated out of the path of the drills and the stop slightly moved from the material as it rotates at which time the blanks are drilled and cut olf.

What I claim is:

l. In a machine of the class described, means for supporting and advancing several pieces of work in a series of spindles arranged in circula-r order, a sto-p co-operative with each piece of Work and to enga-ge the advance end `thereof and also in annular order, tools in circular order, each tool to act on a piece of Work, and means for moving each stop initially from one station on their clrcular pat-l1 in line with the axes of the work, before the tool acts upon each piece of work and concurrently moving eac-h stop in the line of advance of the work.

2. In a machine of the class described, means for supporting and advancing work, a stop to engage the advance end of the work, a tool to act on the work, a stop to arrest the advance of the work, aslide, and means operable by the slide for moving the stop transversely of the line of movement of the tool, before the latter acts upon the work and concurrently in the line of movement of the work.

3. In a machine of the class described, means for supporting and advancing several pieces of Work in a series of spindles arranged in circular order, stops, one to engage each piece of wo-rk at the advance end and also arranged in circular order, tools to act on the work, means for concurrently moving the stops initially from one station to engage the worrk, before the tool acts on the work, and simultaneously in moving each stop circul'arly.

4. In a machine of the class described, means for supporting and advancing several pieces of work in a series of spindles arranged in circular order, stops, one to engage ea-ch piece of work at the advance end and also arranged in circular order, tools to act on the work, a carrier for the stops, means for moving the carrier to cause the stops initially to engage the work before the tools act on the Work, and means operable with the stop, moving means, and acting to move the stops laterally.

5. In a machine of the class described, means for supporting and advancing several pieces o-f work in a series of spindles arranged in circular order, annularly arranged stops, one to engage each piece of work at the advance end, tools to] act on the Work, a carrier for the stops, means for moving the ca-rrier to cause the stop initially to engage the wo-rk, before the tools act on the work, and means operable by the carrier for acting to move the sto-p laterally.

In testimony whereof I aiiix my signature.

ROBERT S. BROWN. 

